Self-hosted / open sourceNetwork & MonitoringHeadquarters: US

Nagios: sovereignty score and 8 European alternatives

Nagios is a family of tools for monitoring IT infrastructure. Nagios Core, the open-source monitoring engine, watches hosts, services and network devices through plugins and sends notifications about problems and recoveries. Nagios Enterprises, LLC builds commercial products on top of it: Nagios XI with dashboards and simpler configuration, Nagios Log Server for collecting and searching logs, Nagios Network Analyzer for flow data such as NetFlow and sFlow, and Nagios Fusion for a combined view of several servers. The customer downloads and installs the products, including as a pre-configured virtual machine. The vendor's website describes no hosted service.

Nagios Enterprises is based in Saint Paul, Minnesota, in the United States. Nagios Core is released under the GNU General Public License version 2, so you can inspect its source code, modify it and run it on your own servers. According to the vendor, its products run on hardware you control, including air-gapped and regulated environments. Monitoring data can therefore stay within your own infrastructure and jurisdiction. Nagios XI, however, is a commercial product from a US vendor.

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Sovereignty score

69 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-3100
No hosting in Europe (US)
Cryptographic key sovereignty SOV-390
Self-hostable: encryption keys under your own control
Freedom from lock-in SOV-680
Open source: low switching costs
Source & runtime sovereignty SOV-4 · SOV-665
Source code auditable, forkable and self-hostable

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 9, 2026

Headquarters	US (US)Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model	Open-source, distributedVerified by hand
Data hosting	USVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	YesVendor-stated
Hosting signal	AKAMAI-LINODE-AP - Akamai Connected Cloud, SG (US)Technically measured
Category	Network & Monitoring
Type	Product
Website	nagios.org ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Nagios

The European alternatives to Nagios come from our knowledge base of over 7,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

45 European Network & Monitoring vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Nagios

Nagios is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

Nagios hosts data outside the EU (US). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

Nagios is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Nagios together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Nagios?

It depends on your use case. Strong EU alternatives to Nagios include Centreon, Checkmk and Icinga. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Nagios?

Yes. Open-source EU alternatives to Nagios include Centreon, Checkmk, Icinga, Zabbix, ntopng and openITCOCKPIT. These keep your data fully under your own control and let you self-host if you want to.

Is Nagios GDPR-compliant and where is the data hosted?

Nagios is headquartered in US and hosts data in US. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 9, 2026.

Sources

Public sources used in the latest check of this record.

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Network & Monitoring

Network & Monitoring: Network monitoring, infrastructure monitoring, log management and observability. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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